15" guardrails accommodate standard mattresses and keep kids safe. Slat design makes checking in at night easy. Includes slat rolls. Smooth drawer glides in desk. Measures 81.5" x 60" x 68.5" (LxWxH), perfect for smaller rooms. Recommended for 8 feet ceiling height above. Desk unit can face inwards or outwards. Pencil-stop lip on desk prevents items from falling off the surface (option to add cork board - purchased separately).